- Title
- Voltammetric detection of vitamin B1 at carbon paste electrodes and its determination in tablets
- Creator
- Oni, Joshua, Westbroek, Philippe, Nyokong, Tebello
- Subject
- To be catalogued
- Date
- 2002
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/289692
- Identifier
- vital:56663
- Identifier
- xlink:href="https://doi.org/10.1002/1521-4109(200209)14"
- Description
- The voltammetric behavior of vitamin B1 in alkaline medium at carbon paste electrode (CPE) is discussed. A method based on cyclic voltammetry for the determination of vitamin B1 at carbon paste electrode modified with manganese phthalocyanine (MnPc-CPE) is presented. In pH 10 buffer, the modified electrode showed catalytic activity towards the oxidation of vitamin B1 by considerably increasing the oxidation current of one of the observed waves compared to the oxidation current obtained at an unmodified electrode. The modified electrode was stable towards the determination of vitamin B1 compared to the unmodified electrode that is completely poisoned after a few scans. A linear relationship between the oxidation current and the concentration of vitamin B1 in solution was observed. The detection limit for vitamin B1 at the modified electrode was of the order of 10−5 mol dm−3. Commercial vitamin B1 tablets were analyzed using the modified electrodes.
- Format
- computer, online resource, application/pdf, 1 online resource (4 pages), pdf
- Publisher
- Wiley Library Online
- Language
- English
- Relation
- Electroanalysis: An International Journal Devoted to Fundamental and Practical Aspects of Electroanalysis, Oni, J., Westbroek, P. and Nyokong, T., 2002. Voltammetric detection of vitamin B1 at carbon paste electrodes and its determination in tablets. Electroanalysis: An International Journal Devoted to Fundamental and Practical Aspects of Electroanalysis, 14(17), pp.1165-1168, Electroanalysis: An International Journal Devoted to Fundamental and Practical Aspects of Electroanalysis volume 14 number 17 p. 1165 2002 1521-4109
- Rights
- Publisher
- Rights
- Use of this resource is governed by the terms and conditions of the Wiley Library Online Terms of Use Statement (https://onlinelibrary.wiley.com/terms-and-conditions)
- Rights
- Closed Access
- Hits: 537
- Visitors: 579
- Downloads: 49
Collections
Nyokong, Tebello (Distinguished Professor)
RU Department of Chemistry
| Thumbnail | File | Description | Size | Format | |||
|---|---|---|---|---|---|---|---|
| View Details Download | SOURCE1 | Voltammetric detection of vitamin B1 at carbon paste electrodes and its determination in tablets (1).pdf | 601 KB | Adobe Acrobat PDF | View Details Download |